No Form 1040-X Was Generated from TurboTax 2020 Downloaded Version (Delux, Mac)

I want to amend my 2020 federal and state tax return.  After following the notices in the downloaded version (Delux, Mac) of TurboTax2020, no 1040-X (only 1040) was generated from the software.  Can anyone let me know how to make it?